Out of stock
SKU: HAS2M5529025
UPC: 075538249184
MPN: 2M5529025
The Hastings Piston Ring Set 4.145 1/16 1/16 3/16 is a premium engine rebuild component engineered for eight-cylinder applications requiring precise bore diameter matching. This file-fit piston ring kit delivers the thermal stability and compression integrity necessary for engines operating under sustained high-RPM conditions. Manufactured from ductile iron with plasma moly coating, the rings provide superior scuff resistance and extended ring life compared to standard cast-iron designs.
The 4.145-inch bore specification accommodates popular mid-sized V8 engine platforms commonly found in American muscle cars, performance trucks, and marine applications. The ring thickness stack of 1/16, 1/16, and 3/16 inches distributes combustion pressure across the ring grooves while maintaining standard tension characteristics. Plasma moly plating on the compression rings reduces friction, minimizes blowby, and improves fuel economy during the critical break-in period. The ductile iron construction provides superior conformability to bore wall irregularities while resisting the thermal cycling stresses that cause traditional cast rings to crack.
This ring set is intended for engine builders and machine shops performing complete engine rebuilds where OEM specification accuracy is non-negotiable. The file-fit design requires precise honing to bore specification, making it the choice for those prioritizing ring sealing performance over quick-fit convenience. Hastings rings are recognized throughout the performance rebuilding community for consistent quality and measurable cylinder pressure retention across extended service intervals.
Piston ring selection directly impacts compression ratio, blowby control, and long-term engine durability. The standard tension specification ensures proper ring-to-groove fit without excessive binding, critical for engines targeting sustained power output. This kit provides the baseline components necessary for engines where precise bore matching and thermal management are priorities.
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